Maybe earlier, but not near the end, as you can't vote yourself to victory anymore in 3.13 (you need to need the votes from at least one other civ too for the majority for religious victory to be possible).
Well, you can get more done with a kind word and a big tank, than with a kind word alone. And when you have a big tank, sometimes you don't even need the kind word.
Good game, congratulations.
Maybe you should talk to Sis how he handles the image space issue.